<template>
	<view>
    <!-- 使用自定义的搜索组件-->
    <!-- <my-search :bgColor="'pink'" :radius="'3'"></my-search> -->
    <my-search @click="gotoSearch"></my-search>
		<view class="scroll-view-container">
      <!-- 左侧的滑动区域-->
      <scroll-view scroll-y="true" class="left-srcoll-view" :style="{height:wh + 'px'}">
        <block v-for="(item,i) in cateList" :key="i">
          <view :class="['left-scroll-view-item',i === active ? 'active' : '']" @click="activeChanged(i)">{{item.cat_name}}</view>
        </block>
        
        
      </scroll-view>
      <!-- 右侧的滑动区域 -->
      <scroll-view scroll-y="true" class="right-srcoll-view" :style="{height:wh + 'px'}" :scroll-top="scrollTop">
        <view class="cate-lv2" v-for="(item2, i2) in cateLevel2" :key="i2">
          <!-- 二级分类的标题 -->
          <view class="cate-lv2-title">/ {{item2.cat_name}} /</view>
          <!-- 当前二级分类下的三级分类列表 -->
          <view class="cate-lv3-list">
            <!-- 三级分类的Item项 -->
            <view class="cate-lv3-item" v-for="(item3,i3) in item2.children":key="i3" @click="gotoGoodsList(item3)">
              <!-- 三级分类的图片 -->
              <image :src="item3.cat_icon"></image>
              <!-- 三级分类的文本 -->
              <text>{{item3.cat_name}}</text>
            </view>
          </view>
        </view>
      </scroll-view>
    </view>
	</view>
</template>

<script>
  import badgeMix from '@/mixins/tabbar-badge.js'
  
	export default {
    mixins:[badgeMix],
		data() {
			return {
        // 当前设备可用的高度
				wh:0,
        cateList:[],
        active:0,
        // 二级分类的列表
        cateLevel2:[],
        scrollTop:0
			};
		},
    onLoad(){
      const sysInfo = uni.getSystemInfoSync()
      console.log(sysInfo)
      this.wh = sysInfo.windowHeight - 50
      this.getCateList()
    },
    methods:{ 
      // 获取分类数据列表数据
    async getCateList(){
        const {data:res} = await uni.$http.get('/api/public/v1/categories')
        console.log(res)
        if( res.meta.status!==200) return uni.$showMsg()
        this.cateList = res.message
        // 为二级分类赋值
        this.cateLevel2 = res.message[0].children
      },
      activeChanged(i){
        this.active = i
        this.cateLevel2 = this.cateList[i].children
        this.scrollTop = this.scrollTop === 0 ? 1: 0
      },
      // 跳转到商品列表页面
      gotoGoodsList(item){
        uni.navigateTo({
          url:'/subpkg/goods_list/goods_list?cid=' + item.cat_id
        })
      },
      gotoSearch(){
        console.log("ok")
        uni.navigateTo({
          url:'/subpkg/search/search'
        })
      }
    }
	}
  
</script>

<style lang="scss">
  .scroll-view-container{
    display: flex;
    .left-srcoll-view{
      width: 120px;
      .left-scroll-view-item{
        background-color: #f7f7f7;
        line-height: 60px;
        text-align: center;
        font-size:12px;
        
         &.active{
           background-color: #FFFFFF;
           position: relative;
           &::before{
             content: '';
             display: block;
             width: 3px;
             height: 30px;
             background-color: #C00000;
             position: absolute;
             top: 50%;
             left: 0;
             transform: translateY(-50%);
           }
         }
      }
    }
    .cate-lv2-title{
      font-size:12px;
      font-weight: bold;
      text-align: center;
      padding: 15px 0;
    }
    .cate-lv3-list{
      display: flex;
      flex-wrap: wrap;
      .cate-lv3-item{
        width: 33.33%;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        margin-bottom: 10px;
        image{
          width: 60px;
          height: 60px;
        }
        text{
          font-size: 12px;
        }
      }
    }
  }
  
</style>
